Abstract: A cylindrical sintered material made of metal, in which one of an inner peripheral surface and an outer peripheral surface of the sintered material includes: a plurality of helical teeth arranged in parallel along a circumferential direction of the sintered material; and a sizing mark provided on at least a part of a tooth bottom surface, a tooth surface, and a tooth tip surface of each of the helical teeth, the helical tooth has a tooth profile error less than or equal to 6 ?m, and the helical tooth has a tooth trace error less than or equal to 27 ?m.

Abstract: Provided is a collagen production promoter comprising, as an active ingredient, a triglyceride represented by the following formula (I), wherein R1, R2 and R3 each denotes a saturated fatty acid residue, at least one of which is a pentadecanoic acid residue. The triglyceride comprising the pentadecanoic acid promotes the production of skin fibroblasts and collagen, and can be used as a topical skin care composition and a beauty food or beverage for improving the condition of skin.

Abstract: The invention provides surface-treated spherical calcium carbonate particles for use in cosmetics which comprise spherical calcium carbonate particles having a volume mean diameter in a range of 0.5 to 20 ?m, and having on their surfaces a hydrous silica coating, and further a silicone oil coating on the hydrous silica coating. The surface-treated spherical calcium carbonate particles for use in cosmetics are obtained by forming a hydrous silica coating on the surfaces of spherical calcium carbonate particles, and then by forming a silicone oil coating on the surfaces of the hydrous silica coating of the particles.

Abstract: The invention provides surface-treated spherical calcium carbonate particles for use in cosmetics which comprise spherical calcium carbonate particles having a volume mean diameter in a range of 0.5 to 20 ?m, and having on their surfaces a hydrous silica coating, and further a silicone oil coating on the hydrous silica coating. The surface-treated spherical calcium carbonate particles for use in cosmetics are obtained by forming a hydrous silica coating on the surfaces of spherical calcium carbonate particles, and then by forming a silicone oil coating on the surfaces of the hydrous silica coating of the particles.

Abstract: A halogen lamp including a glass bulb, a filament inserted inside the bulb, a pair of metal foils, and a pair of outer leads. Each metal foil has one end welded to the filament and the other end welded to the outer lead. The metal foils are contained in glass sleeves and they are collectively inserted inside the bulb. The bulb is softened by heating and shrinks because its inside pressure is reduced to seal the metal foils therein. Since the amount of glass of each sealed portion is larger than the other portions of the bulb by the amount of the sleeve, the shape of the sealed portion is stabilized.

Abstract: Related to a blast furnace coke and a production method thereof. A coke having high reactivity and high strength in which coke strength, reactivity with CO2 and a pore size distribution are each at a desired level can be produced at a low cost by using a coal blend composed of a small number of brands comprising a large quantity of caking coal having medium rank and low fluidity. The blast furnace coke, being obtained by charging a coal blend comprising 60 wt % or more of semi-heavy caking coal having medium rank and low fluidity in which a content of inert component is 30 vol % or more in total or another coal blend comprising 60 wt % to 95 wt % of semi-heavy caking coal having medium rank and low fluidity in which mean reflectance (Ro) is 0.9 to 1.1 and maximum fluidity (MF) is less than 3.0 and the balance being a caking coal in which mean reflectance (Ro) exceeds 1.

Abstract: In a method of producing coke for metallurgy by carbonizing a coal blend obtained by blending plural raw coals in an coke oven, a coal blend containing not less than 60 wt % of a medium coking coal of middle coalification degree and low fluidity having an inert component content of not less than 30% is used as a coal charged into the coke oven, whereby a great amount of raw coal of a brand being cheap and easily available can be blended in a great amount and hence coke for metallurgy having an excellent quality such as strength or the like can be produced by blending few brands of coals as compared with a coal blend of many brands.

Abstract: A biaxially orientated polyester film for sublimitation type thermal transfer printing having a coating layer and a sublimation type ink layer formed on the coating layer. The coating layer comprises an aqueous acrylic resin (A), an aqueous polyester (B) and an aqueous epoxy compound (C), weights of which satisfy the relationships: (1) 0.30.ltoreq.W.sub.A .ltoreq.0.90, (2) 0.10.ltoreq.W.sub.B .ltoreq.0.50, (3) 0.05.ltoreq.W.sub.C .ltoreq.0.30, and (4) 0.25.ltoreq.W.sub.C /W.sub.B .ltoreq.2 in which W.sub.A, W.sub.B and W.sub.C are weight ratios of the aqueous acrylic resin (A), the aqueous polyester (B), and the aqueous epoxy compound (C), respectively based the whole weight of the coating layer.

Abstract: A biaxially oriented polyester film for a magnetic recording medium contains: 1) at least two different sizes of synthetic calcium carbonate particles; and 2) aluminum oxide particles to produce a film with excellent surface uniformity, running properties, and slittability wherein the film generates few scratches and low amounts of abrasion dust. The synthetic calcium carbonate particles are surface treated with a polycarboxylic acid, followed by treatment with a phosphorus compound. The biaxially oriented polyester film can comprise a layer in a multilayer film.

Abstract: A biaxially oriented polyethylene-2,6-naphthalate (PEN) film for capacitor dielectric which contains the specific monodisperse cross-linked polymer particles is described. The capacitors using the PEN film have excellent handling qualities and workability as well as excellent electrical properties.

Abstract: Disclosed herein is a magnetic recording medium comprising:a stretched polyethylene-2,6-naphthalate multilayered film having a high-roughness surface and a low-roughness surface;a coating layer (A) having specific surface properties and being formed on the high-roughness surface of said multilayered film;a coating layer (B) having a specific surface property and being formed on the low-roughness surface of said multilayered film; anda thin ferromagnetic metal film formed on said coating layer (B).

Abstract: A novel biaxially stretched polyester film having excellent transparency and slipperiness is disclosed. The biaxially stretched polyester comprises a polyester composition which exhibits a film haze of not more than 1% after it is made into a film having a thickness of 100 .mu.m and 50-500 ppm on the basis of the weight of monodispersed cross-linked high polymer particles having an average particle diameter of 0.8-1.4 .mu.m and exhibits a deformability of 1.2-5.0 in a biaxially stretched polyester film.

Abstract: A biaxially oriented polyester film containing a specific calcium carbonate is described. The calcium carbonate contained in the film is specified by its vaterite form, its average particles size of 0.07 to 1.5 .mu.m, and its particle size distribution ratio of not more than 2.00. The biaxially oriented polyester film containing such specific calcium carbonate is excellent in both the running property and wear resistance, and suitable for the use as a base of magnetic recording media.

Abstract: A biaxially oriented polyester film containing 0.05 to 3 wt % of agglomerates of primary particles of aluminum oxide having an average particle size of 5 to 40 nm, the agglomerates having an average particle size of 50 to 400 nm. The film of the present invention is excellent in the wear resistance against various members such as a metal pin, and suitable for various industrial purposes including a base film of a magnetic recording medium.